Validating negative numbers using the NumberValidator in Flex

By On August 31, 2008 · Leave a Comment

The following example shows how you can prevent or allow negative numbers when using the NumberValidator class by setting the Boolean allowNegative property.

Full code after the jump.

 

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Validating integers using the NumberValidator class

By On August 30, 2008 · 13 Comments

The following example shows how you can validate a number as an integer or real (floating point) number by setting the domain property on a NumberValidator instance.

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Validating email addresses using the EmailValidator class in Flex

By On August 29, 2008 · 9 Comments

The following example shows you how you can validate email addresses in a Flex application using the EmailValidator class and the validate() and static EmailValidator.validateEmail() methods.

Full code after the jump.

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Creating a component instance by class name in ActionScript 3.0

By On August 28, 2008 · 10 Comments

The following example shows how you can create a new Flex component instance by using its class name by calling the getDefintionByName() method.

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Parsing XML nodes and Objects with dashes in their names in ActionScript 3.0

By On August 28, 2008 · Leave a Comment

The following example shows how you can parse an XML node with a dash in its node name (<font-family />) as well as parsing an Object with a dash in it’s identifier using the square bracket notation ([]).

Full code after the jump.

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Setting a background image on a VideoDisplay control in Flex

By On August 28, 2008 · Leave a Comment

The following example shows how you can specify a background image for a Flex VideoDisplay control by setting the backgroundImage style.

Full code after the jump.

 

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Setting the horizontal scrollbar policy on a DataGrid control in Flex

By On August 27, 2008 · 11 Comments

The following example shows how you can set the horizontal scrollbar policy on a Flex DataGrid control by setting the horizontalScrollPolicy property to one of the constants in the mx.core.ScrollPolicy class.

Full code after the jump.

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Using a clipboard menu in Flex with Flash Player 10

By On August 27, 2008 · 3 Comments

The following example shows how you can set a clipboard menu and specify custom clipboard items on a context menu by setting the contextMenu and clipboardItems properties.

Full code after the jump.

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Setting the vertical scrollbar policy on a TextArea control in Flex

By On August 26, 2008 · Leave a Comment

The following example shows how you can set the vertical scrollbar policy on a Flex TextArea control by setting the verticalScrollPolicy property to one of the constants in the mx.core.ScrollPolicy class.

Full code after the jump.

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Adding a link to context menu in Flash Player 10

By On August 26, 2008 · Leave a Comment

The following example shows how you can add a custom link to a context menu in Flex Gumbo and Flash Player 10 by setting the link and contextMenu properties.

Full code after the jump.

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Programmatically scrolling a TextArea control in Flex

By On August 26, 2008 · Leave a Comment

The following example shows how you can scroll a Flex TextArea control by setting the verticalScrollPosition and maxVerticalScrollPosition properties.

Full code after the jump.

 

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Previewing an image before uploading it using the FileReference class in Flash Player 10

By On August 25, 2008 · 64 Comments

The following example shows how you can browse for an image file from your local file system and preview the image before uploading it to a remote webserver by using the FileReference class’s new load() method in Flash Player 10. Once the user has browsed and selected an image from their local machine, you can [...]

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